Autor: Barboteu, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Numerical modelling of a dynamic contact problem with normal damped response and unilateral constraint
Autorzy:: Barboteu, M.
Ouafik, Y.
Sofonea, M.
Powiązania:: https://bibliotekanauki.pl/articles/281115.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: dynamic contact
viscoelastic material
frictional contact
normal damped response
unilateral constraint
penalty method
numerical simulations
Opis:: We consider a mathematical model which describes the dynamic evolution of a viscoelastic body in frictional contact with an obstacle. The contact is modelled with normal damped response and unilateral constraint for the velocity field, associated to a version of Coulomb’s law of dry friction. Our aim is to present a detailed description of the numerical modelling of the problem. To this end, we use a penalty method to approximate the constraint. Then, we provide numerical simulations in the study of a two-dimensional example and compare the penalty model with the original one.
Źródło:: Journal of Theoretical and Applied Mechanics; 2018, 56, 2; 483-496
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Modeling and simulations for quasistatic frictional contact of a linear 2D bar
Autorzy:: Barboteu, M.
Djehaf, N.
Shillor, M.
Sofonea, M.
Powiązania:: https://bibliotekanauki.pl/articles/279259.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: new 2D bar
contact
friction
computational results
finite element discretization
Opis:: This work considers a mathematical model that describes quasistatic evolution of an elastic 2D bar that may come in frictional contact with a deformable foundation. We present the model and some of its underlying assumptions. In particular, the novelty in the model is that both vertical and horizontal motions are taken into account, which makes it especially useful when frictional contact is concerned. Contact is described with the normal compliance condition and friction with the Coulomb law of dry friction. We introduce a hybrid variational formulation of the problem and a numerical discretization based on a uniform time step and the finite element method in space. The numerical algorithm has been implemented, and we present computer simulations that illustrate the mechanical behavior of the system with emphasis on frictional aspects of the problem.
Źródło:: Journal of Theoretical and Applied Mechanics; 2017, 55, 3; 897-910
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

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